3M Dual Lock SJ 354 Reclosable Fastener DT-2113-4517-8 – industrial two-sided interlocking tape

3M Dual Lock SJ 354 reclosable fastener is a two-sided interlocking tape system engineered to provide removable yet durable mechanical attachment for panels, signage and assemblies in industrial and commercial applications. The system offers a firm hold while allowing repeated opening and closing without adhesive residue or loss of engagement, making it suitable where maintenance access or repositioning is required.

Advantages

The Dual Lock SJ 354 fastener combines a high-density interlocking mushroom-shaped stem profile with pressure-sensitive adhesive backing on both sides to deliver a consistent, vibration-resistant connection. It reduces the need for mechanical fasteners or tools during installation and enables quick removal and reattachment. The product resists shear and peel forces typical in decorative lighting and fixture mounting, and maintains performance across multiple cycles of reclosure.

Suitable for

• Mounting decorative lighting trims, channels and small fixtures
• Securing access panels and inspection covers that require periodic removal
• Attaching signage, nameplates and overlays to rigid substrates
• Temporary or semi-permanent assemblies in manufacturing and maintenance

Key specifications

• Two-sided interlocking reclosable fastener
• Pressure-sensitive adhesive backing on both faces for bonding to rigid substrates
• Mushroom-shaped stem geometry providing repeated mechanical engagement
• High resistance to shear, vibration and repeated opening/closing cycles
• Simplifies installation where tool-free removal and reattachment are required

How to use

Select clean, dry substrates and ensure surfaces are free from oil, dust or loose debris before application. Cut the Dual Lock tape to the required length, apply firm pressure to activate the adhesive bond, and align the mating sides so stems interlock evenly. For best adhesive performance, apply uniform pressure across the bonded area and allow a short dwell time for initial tack. Repositioning is possible by separating the two sides and re-engaging them as needed.

Usage recommendations

For long-term performance in decorative lighting applications, test compatibility with substrate materials and paints. Avoid applying to low-energy plastics without a primer, and consider additional mechanical retention where high peel forces or edge lifting are expected. Store rolls in a cool, dry place away from direct sunlight to preserve adhesive properties.